package com.nettylern.netty.入门;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

import java.util.Date;

/**
 * @author liliang
 * @date 2019/12/5.
 */
public class TimeServerHandler extends ChannelInboundHandlerAdapter{

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        byte[] req = new byte[buf.readableBytes()];
        buf.readBytes(req);
        String body = new String(req, "UTF-8");
        System.out.println("服务器接收到消息:" + body);
        String currentTime = "QUERY TIME ORDER".equalsIgnoreCase(body)
                ? new Date(System.currentTimeMillis()).toString() : "BAD ORDER";
        ByteBuf writeBuf = Unpooled.copiedBuffer(currentTime.getBytes());
        ctx.write(writeBuf);
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
        ctx.flush();
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        ctx.close();
    }
}
